nearfar (version 1.3)

summ_matches: Computes table of absolute standardized differences

Description

Computes absolute standardized differences for both continuous and binary variables. Called by opt_nearfar to summarize results of near-far match.

Usage

summ_matches(dta, iv, covs, match)

Value

A table of mean variable values for both the ``encouraged'' and ``discouraged'' groups across all variables plus absolute standardized differences for each variable

Arguments

dta

The name of the data frame on which matching was performed

iv

The name of the instrumental variable, e.g., iv="QOB"

covs

A vector of the names of the covariates to make ``near'', e.g., covs=c("age", "sex", "race")

match

A two-column matrix of row indices of paired matches

Author

Joseph Rigdon

See Also

opt_nearfar

Examples

k2 = matches(dta=mtcars, covs=c("cyl", "disp"), sinks=0.2, iv="carb",
     cutpoint=2, imp.var=c("cyl"), tol.var=0.03)
summ_matches(dta=mtcars, iv="carb", covs=c("cyl", "disp"), match=k2)